/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Operations/MeshPlaneCut.h
void SplitCrossingEdges ( [TArray](API\Runtime\Core\Containers\TArray)< double > & Signs, [TSet](API\Runtime\Core\Containers\TSet)< int > & ZeroEdges, [TSet](API\Runtime\Core\Containers\TSet)< int > & OnCutEdges, [TSet](API\Runtime\Core\Containers\TSet)< int > & OnSplitEdges, bool bDeleteTrisOnPlane )